60577721 has 2 divisors, whose sum is σ = 60577722. Its totient is φ = 60577720.

The previous prime is 60577709. The next prime is 60577771. The reversal of 60577721 is 12777506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52765696 + 7812025 = 7264^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 60577721 - 2²² = 56383417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_3594347 and since 60577721 and 3594347 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (60577771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30288860 + 30288861.

It is an arithmetic number, because the mean of its divisors is an integer number (30288861).

Almost surely, 2^60577721 is an apocalyptic number.

It is an amenable number.

60577721 is a deficient number, since it is larger than the sum of its proper divisors (1).

60577721 is an equidigital number, since it uses as much as digits as its factorization.

60577721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 60577721 is about 7783.1690846338. The cubic root of 60577721 is about 392.7392534299.

The spelling of 60577721 in words is "sixty million, five hundred seventy-seven thousand, seven hundred twenty-one".